Designation:D3903−15StandardSpecificationforRubberSealsUsedinAir-HeatTransportofSolarEnergySystems1ThisstandardisissuedunderthefixeddesignationD3903;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversthegeneralrequirementsfortherubbersealsusedinsolarenergysystemsemployingair-heattransport.Examplesareductanddamperseals.Par-ticularapplicationsmaynecessitateotherrequirementsthatwouldtakeprecedenceovertheserequirementswhenspeci-fied.NOTE1—RubbersealsforthecollectorarecoveredinSpecificationsD3667andD3771.1.2Designrequirementpertainsonlytopermissibledeflec-tionsoftherubberduringthermalexpansionorcontractionofthesealinuseandthetolerancesindimensionsofmoldedandextrudedseals.1.3Thisspecificationdoesnotincluderequirementsper-tainingtothefabricationorinstallationoftheseals.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodsportion,Section10,ofthisspecification:Thisstandarddoesnotpurporttoaddressthesafetyconcernsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C661TestMethodforIndentationHardnessofElastomeric-TypeSealantsbyMeansofaDurometerC717TerminologyofBuildingSealsandSealantsC719TestMethodforAdhesionandCohesionofElasto-mericJointSealantsUnderCyclicMovement(HockmanCycle)D395TestMethodsforRubberProperty—CompressionSetD412TestMethodsforVulcanizedRubberandThermoplas-ticElastomers—TensionD865TestMethodforRubber—DeteriorationbyHeatinginAir(TestTubeEnclosure)D1149TestMethodsforRubberDeterioration—CrackinginanOzoneControlledEnvironmentD1229TestMethodforRubberProper...
